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Autres articles (47)
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Support de tous types de médias
10 avril 2011Contrairement à beaucoup de logiciels et autres plate-formes modernes de partage de documents, MediaSPIP a l’ambition de gérer un maximum de formats de documents différents qu’ils soient de type : images (png, gif, jpg, bmp et autres...) ; audio (MP3, Ogg, Wav et autres...) ; vidéo (Avi, MP4, Ogv, mpg, mov, wmv et autres...) ; contenu textuel, code ou autres (open office, microsoft office (tableur, présentation), web (html, css), LaTeX, Google Earth) (...)
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Ajouter notes et légendes aux images
7 février 2011, parPour pouvoir ajouter notes et légendes aux images, la première étape est d’installer le plugin "Légendes".
Une fois le plugin activé, vous pouvez le configurer dans l’espace de configuration afin de modifier les droits de création / modification et de suppression des notes. Par défaut seuls les administrateurs du site peuvent ajouter des notes aux images.
Modification lors de l’ajout d’un média
Lors de l’ajout d’un média de type "image" un nouveau bouton apparait au dessus de la prévisualisation (...) -
Contribute to translation
13 avril 2011You can help us to improve the language used in the software interface to make MediaSPIP more accessible and user-friendly. You can also translate the interface into any language that allows it to spread to new linguistic communities.
To do this, we use the translation interface of SPIP where the all the language modules of MediaSPIP are available. Just subscribe to the mailing list and request further informantion on translation.
MediaSPIP is currently available in French and English (...)
Sur d’autres sites (4374)
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avformat/dump : Show coded dimensions again
5 juin 2016, par Michael Niedermayer -
When using ffmpeg.exe to create video from sequence of images the result is avi file that show green color why ?
9 janvier 2014, par user3163653In Form1 im taking screenshots of my screen I checked they are ok i save them to the hard disk and see they are ok.
private void timer1_Tick(object sender, EventArgs e)
{
using (bitmap = (Bitmap)ScreenCapture.CaptureScreen(true))
{
Image mScreenImage = new Bitmap(Screen.PrimaryScreen.Bounds.Width,
Screen.PrimaryScreen.Bounds.Height);
Graphics g = Graphics.FromImage(bitmap);
g.CopyFromScreen(0, 0, 0, 0, new Size(bitmap.Width, bitmap.Height));
g.Dispose();
bitmap.Save(@"D:\Testbmp\" + counter.ToString("D6") + ".jpg", ImageFormat.Jpeg);
counter++;
ffmp.PushFrame((Bitmap)mScreenImage);
}
}Then in the new class ffmp im using pipe to get the screenshots and build the avi file in real time :
using System;
using System.Windows.Forms;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Drawing;
using System.IO.Pipes;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.IO;
namespace ScreenVideoRecorder
{
class Ffmpeg
{
NamedPipeServerStream p;
String pipename = "mytestpipe";
System.Diagnostics.Process process;
string ffmpegFileName = "ffmpeg.exe";
string workingDirectory;
public Ffmpeg()
{
workingDirectory = Path.GetDirectoryName(Application.ExecutablePath);
Logger.Write("workingDirectory: " + workingDirectory);
if (!Directory.Exists(workingDirectory))
{
Directory.CreateDirectory(workingDirectory);
}
ffmpegFileName = Path.Combine(workingDirectory, ffmpegFileName);
Logger.Write("FfmpegFilename: " + ffmpegFileName);
}
public void Start(string pathFileName, int BitmapRate)
{
try
{
string outPath = pathFileName;
p = new NamedPipeServerStream(pipename, PipeDirection.Out, 1, PipeTransmissionMode.Byte);
ProcessStartInfo psi = new ProcessStartInfo();
psi.WindowStyle = ProcessWindowStyle.Hidden;
psi.UseShellExecute = false;
psi.CreateNoWindow = false;
psi.FileName = ffmpegFileName;
psi.WorkingDirectory = workingDirectory;
psi.Arguments = @"-f rawvideo -pix_fmt yuv420p -video_size 1920x1080 -i \\.\pipe\mytestpipe -map 0 -c:v mpeg4 -r " + BitmapRate + " " + outPath;
process = Process.Start(psi);
process.EnableRaisingEvents = false;
psi.RedirectStandardError = true;
p.WaitForConnection();
}
catch (Exception err)
{
Logger.Write("Exception Error: " + err.ToString());
}
}
public void PushFrame(Bitmap bmp)
{
try
{
int length;
// Lock the bitmap's bits.
//bmp = new Bitmap(1920, 1080);
Rectangle rect = new Rectangle(0, 0, bmp.Width, bmp.Height);
//Rectangle rect = new Rectangle(0, 0, 1280, 720);
System.Drawing.Imaging.BitmapData bmpData =
bmp.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadOnly,
bmp.PixelFormat);
int absStride = Math.Abs(bmpData.Stride);
// Get the address of the first line.
IntPtr ptr = bmpData.Scan0;
// Declare an array to hold the bytes of the bitmap.
//length = 3 * bmp.Width * bmp.Height;
length = absStride * bmpData.Height;
byte[] rgbValues = new byte[length];
//Marshal.Copy(ptr, rgbValues, 0, length);
int j = bmp.Height - 1;
for (int i = 0; i < bmp.Height; i++)
{
IntPtr pointer = new IntPtr(bmpData.Scan0.ToInt32() + (bmpData.Stride * j));
System.Runtime.InteropServices.Marshal.Copy(pointer, rgbValues, absStride * (bmp.Height - i - 1), absStride);
j--;
}
p.Write(rgbValues, 0, length);
bmp.UnlockBits(bmpData);
}
catch(Exception err)
{
Logger.Write("Error: " + err.ToString());
}
}
public void Close()
{
p.Close();
}
}
}This is the arguments im using now :
psi.Arguments = @"-f rawvideo -pix_fmt yuv420p -video_size 1920x1080 -i \\.\pipe\mytestpipe -map 0 -c:v mpeg4 -r " + BitmapRate + " " + outPath;
Before that I tried to use libx264 instead the mpeg4 but it didn't create the avi file good.
The problem is that the avi file on the hard disk when I play it show just green color.
I can play any other avi files on my hard disk but when playing this avi file I see green.And this is what I see when im playing the avi file :
I tried to use Gspot to find if I need any codec to install and this is what I see :
And I have ffdshow installed already so what should I do now ?
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libavfilter/vf_hwdownload : show error when ff_formats_ref fails
22 mai 2016, par dsmudhar